WO2020120047A1

WO2020120047A1 - Pipe processing machine for cutting pipes or profiled sections using a laser beam

Info

Publication number: WO2020120047A1
Application number: PCT/EP2019/080822
Authority: WO
Inventors: Karsten Ruetz; Florian Jarsch; Philipp Matt
Original assignee: Trumpf Werkzeugmaschinen Gmbh + Co. Kg
Priority date: 2018-12-11
Filing date: 2019-11-11
Publication date: 2020-06-18
Also published as: EP3894128A1; EP3894128B1; CN113226631A; JP2022513783A; US20220023974A1; JP7268158B2; DE102018131781A1

Abstract

The invention relates to a laser pipe cutting machine for cutting pipes or profiled sections using a laser beam generated by a laser unit, comprising a machine bed on which a feed station is provided for feeding pipes or profiled sections to be processed along an x-axis and comprising a push-through feed, through which the pipe or profiled section is pushed to a cutting head, wherein the cutting head is movably arranged along a y-axis running perpendicularly to the x-axis and along a z-axis running perpendicularly to the y-axis, and the machine bed is equipped with an axis support on which the cutting head is movably mounted and the push-through feed is arranged.

Description

Title: Pipe processing machine for cutting pipes or profiles using a laser beam

description

The invention relates to a pipe processing machine for cutting pipes or profiles by means of a

Laser beam, with a machine bed on which one

Feed station is provided for feeding pipes or profiles to be machined along an X axis. The tube processing machine also has

Push-through chuck through which the tube or profile is pushed through to a cutting head. Of the

The cutting head is along a Y-axis running perpendicular to the X-axis, which usually runs horizontally, and along a Z-axis running perpendicular to the Y-axis. Axis, which is usually vertical, arranged to be movable.

Such a tube processing machine is known for example from DE 10 2016 106 067 A1 or EP 2 017 023 B1. In tube processing machines of this type, a processing station is provided which is separate from the machine bed and at which the cutting head can be moved along the Y axis and the Z axis. The known machines consequently have two subassemblies: the machine bed with the feed station and the one

Push-through chuck and on the other hand the processing station with the cutting head and the guides for guiding the

Cutting head along the axes. The separate training has the advantage that the modules can be manufactured and transported separately from each other. However, it has been shown in practice that the

Machine set-up is comparatively complex since the two assemblies must be aligned exactly with one another in order to ultimately ensure precise cutting of the tube or profile. Furthermore, there may be disadvantages with regard to the machine dynamics, since an oscillation of the

Machine bed compared to the largely stationary processing station can occur, resulting in

Machining inaccuracies can result.

The present invention has for its object to provide a pipe processing machine of the type mentioned

to provide, which remedies the disadvantages mentioned. This task is solved by a

Pipe processing machine with the characteristics of

Claim 1.

According to the invention it is therefore provided that on

An axle support is arranged on the machine bed, on which the cutting head is movably mounted and on which the

Push-through chucks are arranged. Characterized in that on the one hand the cutting head is movably provided on the axle support, and on the other hand that the push-through chuck on

Axle carrier is arranged, a machine can be realized in which the individual functional components

are permanently exactly aligned with each other. A

there is no need to set up the machine during assembly. The axle support formed with the machine bed can be manufactured with the machine bed in such a way that the individual components are positioned exactly

to each other.

The machine bed can, in particular, be formed in one piece with the axle support, wherein the machine bed can be permanently connected to the axle support.

The machine bed and the axle support are advantageously joined by means of welding. Machining of the machine bed including the axle support, in particular, is preferably carried out within one after the joining

single clamping. This can ensure that the two components, the machine bed and the Axle beams are machined together after joining so that an exact alignment is permanently maintained.

However, it is also conceivable that the machine bed and the axle support are joined together by screws.

In order to avoid possible torsion of the axle support around the X axis, it is advantageous if the axle support is larger in the Y direction, that is to say in the horizontal direction

Expansion than the machine bed. This results in a larger contact area and therefore a higher torsional rigidity, which results in a robust construction of the machine.

It is also advantageous if the push-through chuck is fixed and fixed on the axle carrier in the direction of the X axis. This also contributes to permanent, precise positioning of the parts. In addition, higher accuracy can be achieved with laser cutting, since the Tool Center Point (TCP) is then at a constant distance from the feed-through chuck. The distance can be comparatively small, so that disturbing vibrations on the machine and / or on the pipe or profile to be machined can be minimized. Since the cutting head and the push-through chuck are realized in the same assembly, undesirable vibrations between the pipe or profile guided by the push-through chuck and the cutting head can be largely prevented. In a further embodiment of the invention, it is provided that a Y-guide on the axle support with a slide which can be moved along the Y-guide for the movement of the

Cutting head is provided along the Y axis. Furthermore, on the Y-slide there is a Z-guide with a slide that can be moved along the Z-guide to make the

Cutting head provided along the Z axis. Of the

The cutting head is then arranged on the Z-slide. With the arrangement described, the cutting head can be moved in a comparatively simple manner along the Y axis and independently of it along the Z axis.

In another embodiment of the invention

provided that the cutting head can be moved along an additional X axis. Through this training the

Cutting head can also be moved along the additional X-axis, which creates a larger space between the

Cutting head and the push-through chuck are created. This allows this despite the fixed push-through chuck

Cutting long contours and reducing one

Risk of collision.

According to the invention, it can further be provided that the axle support has a Y-guide with a Y-carriage that can be moved along the Y-guide, so that the

Has cutting head along the Y axis and that on the Y slide an additional X guide with a along the

Additional X guide movable additional X slide for

The cutting head can be moved along the additional X axis. In this training, the additional X- Slide a Z-guide with a Z-slide that can be moved along the Z-guide to make the

Cutting head provided along the Z-axis, wherein the cutting head is then arranged on the Z-slide.

It is also preferably provided that the cutting head is arranged to be pivotable about the Y axis along a B axis. When the cutting head is provided on the Z-carriage, a pivot guide for pivoting the cutting head about the Y-axis along a B-axis can consequently be provided on the Z-carriage.

In the more distant position of the cutting head from

Push-through chuck the cutting head can be swiveled around the B-axis to or from the push-through chuck without colliding with the push-through chuck. This allows in particular bevel cuts, i.e. Laser cuts that are not perpendicular to the pipe surface can be realized.

In today's pipe cutting machines, the push-through chuck is moved away from the cutting head along the X direction in order to make the bevel cut to prevent the cutting head from rotating

enable. The B axis remains in the X direction

stationary. The rotation of the cutting head creates different distances between TCP and

Push-through lining. This leads to loss of accuracy.

In an embodiment according to the invention with an additional X axis, this can be used to control the TCP Bevel cut always at a constant distance from the

Push-through chuck to hold, in which the additional X-axis makes compensatory movements to the B-axis. This brings advantages in the accuracy of bevel cut machining.

In a further embodiment, the additional X axis can also be designed as a highly dynamic axis and overlaid with the X axis. This can produce productivity advantages in the production of small contours, since the addition of the X axis can be made much more dynamic than the X axis that moves the tube.

In an alternative embodiment, instead of the order of the axes Y-axis, additional X-axis, Z-axis, B-axis described above, the following axis sequences can be used

be provided:

Additional X axis, Y axis, Z axis, B axis; or

Y axis, Z axis, additional X axis, B axis.

The fact that the machine bed with the

Axle carrier is arranged exactly in relation to each other, it is advantageous if interfaces to the axle carrier

Arrangement of further functional components are provided.

Such components can in particular be cameras, sensors, device sheets, protective hoods, control panels,

Seam position detection devices and / or

Seam position control devices.

Further advantageous refinements and details of the invention can be found in the following description, based on which two embodiments of the invention are described and explained in more detail.

Show it:

Figure 1 shows a tube processing machine according to the invention in side view;

Figure 2 shows the machine of Figure 1 in front view;

FIG. 3 shows a detail of the machine according to FIG. 1 in an isometric view;

Figure 4 is a front view of a second machine according to the invention; and

5 shows a detail of the machine according to FIG. 4 in an isometric view.

In Figures 1 to 3 is a pipe processing machine 10 for cutting pipes or profiles by means of a

Laser beam shown. The machine 10 includes a

Machine bed 12 on which a feed station 14 for

Feeding of pipes or profiles to be machined is provided along an X axis 16. To support pipes or profiles, not shown in the figures, workpiece supports 18 are provided on the machine bed 12.

At the front of the machine 10, an axle support 20 is provided at the free end of the machine bed 12 is connected in one piece and in particular inextricably to the machine bed 12. The axle support 20 is preferably welded to the machine bed 12. An editing of the

Machine bed 12 and the axle support 20 are preferably carried out after the joining of the machine bed 12 and

Axle beam 20. This allows a permanent and

precise positioning of the components and their functional sections can be achieved.

According to the invention, however, it is also conceivable that the machine bed with the axle support are detachably joined together, for example by screwing.

A cutting head 22 is provided on the axle support 20 and is arranged to be movable along a Y axis 24 running perpendicular to the X axis 16 and in the horizontal direction and a Z axis 26 running perpendicular to the X axis in the vertical direction. The axle beam 20 also has a push-through chuck 28 through which the

processing tube or profile passed through the axle beam 20 and by means of which the tube or profile can be clamped during processing. The

Push-through chuck 28 is fixedly and immovably arranged on the axle support 20 in the direction of the X-axis.

To provide one from the cutting head 22

emerging laser beam by means of which the pipe or profile to be processed is cut, a laser generator, not shown in the figures, is provided, the laser beam of which is also not shown in detail is shown deflected towards the cutting head 22.

As is particularly clear from FIG. 3, the

Axle beam 20 in the direction of the Y axis 24 a larger one

Expansion as the machine bed 12 on. This results in a stable and robust arrangement. In particular, torsion about the X axis 16 can be reliably prevented.

As further becomes clear from FIG. 3 in particular, a Y guide 30 is provided on the axle support, in which a Y slide 32 can be moved in the direction of the Y axis 24. The Y-slide 32 provides a Z-guide 34, along which a Z-slide 36 is arranged to be movable. Ultimately, the cutting head 22 is arranged on the Z-slide 36, whereby it can be rotated about the Y-axis 24 along a B-axis, which is indicated by the arrow 38.

The control of the cutting head 22 along the Y-axis 24, the Z-axis 26 and the B-axis 38 takes place via a machine control, the correspondingly arranged and set up drive units for displacing the

Cutting head 22 controls. The machine control can be provided in a control cabinet that

integrally formed with the machine bed 12 and

is in particular permanently connected to the machine bed 12. The control cabinet can in particular to the

Machine bed 12 be welded. FIGS. 4 and 5 show a further tube processing machine 50 according to the invention, the construction of which is shown in FIG

Essentially corresponds to the construction of the tube processing machine 10. Corresponding components are provided with corresponding reference symbols.

In contrast to the tube processing machine 10, the cutting head 22 can additionally be moved along an additional X-axis 52 in the tube processing machine 50. For this purpose, an additional X guide 54 is provided on the Y slide 32, along which an additional X slide 56 can be moved. The carriage 56 then has the Z-guide 34, along which the Z-carriage 36 can be moved. According to the pipe processing machine 10 is also in the

Pipe processing machine 50, the cutting head on the Z slide 36 can be pivoted about the Y axis 24 along the B axis 38.

In the machine 50, as with the machine 10, CNC-controlled drives are provided, with which the cutting head 22 ultimately along the Y axis 24, the Z axis 26,

Additional X-axis 52 and the B-axis 38 can be moved.

Claims

1. Pipe processing machine (10, 50) for cutting pipes or profiles by means of a laser beam, with a machine bed (12), on which a feed station (14) is provided for feeding pipes or profiles to be processed along an X axis (16) , with a push-through chuck (28) through which the pipe or profile leads to a cutting head (22)

is pushed through, the cutting head being arranged to be movable along a Y axis (24) running perpendicular to the X axis (16) and along a Z axis (26) running perpendicular to the Y axis (24), characterized in that on Machine bed (12) an axle support (20) is arranged on which the cutting head (22) is movably mounted and on which the

Push-through chucks (28) are arranged.

2. Pipe processing machine (10, 50) according to claim 1, characterized in that the machine bed (12) with the axle support (20) is integrally formed.

3. Pipe processing machine (10, 50) according to claim 1 or

2, characterized in that the machine bed (12) is permanently connected to the axle support (20).

4. Pipe processing machine (10, 50) according to one of the

preceding claims, characterized in that the machine bed (12) and the axle support (20) are joined by means of welding or by means of screws.

5. Pipe processing machine (10, 50) according to one of the preceding claims, characterized in that the axis carrier (20) in the Y direction (24) has a greater extent than the machine bed (12)

having .

6. Pipe processing machine (10, 50) according to one of the

preceding claims, characterized in that the push-through chuck (28) in the direction of the X-axis (16) is arranged immovably on the axle support (20).

7. Pipe processing machine (10) according to one of the

The preceding claims, characterized in that a Y-guide (30) with a Y-slide (32) which can be moved along the Y-guide (30) for moving the cutting head (22) along the Y-axis (24 ) it is provided that on the Y-slide (32) a Z-guide (34) with a Z-slide (36) movable along the Z-guide (34)

Movability of the cutting head (22) along the Z axis (26) is provided, the cutting head (22) being arranged on the Z carriage (36).

8. Pipe processing machine (10, 50) according to one of the

Claims 1 to 6, characterized in that the cutting head (22) can be moved along an additional X-axis (52).

9. Pipe processing machine (10, 50) according to claim 8, characterized in that the additional X-axis (52) is set up in such a way that the cutting head or the Tool Center Point (TCP) for bevel cut in

constant distance to the push-through chuck (28) is kept.

10. Pipe processing machine (10, 50) according to claim 8 or

9, characterized in that the additional X-axis (52) is set up as a highly dynamic axis for superimposing the movement of the X-axis (16).

11. Pipe processing machine (50) according to claim 8, 9 or

10, characterized in that the axle support (20) has a Y-guide (30) with a Y-carriage (32) which can be moved along the Y-guide (30) to make the cutting head (22) movable along the Y-axis (24). has an additional X guide (54) on the Y slide (32) with an additional X slide (56) which can be moved along the additional X guide (54)

Movability of the cutting head (22) along the additional X-axis (52) provides that on the additional X-slide (56) there is a Z-guide (34) with a Z-slide which can be moved along the Z-guide (34) (36) for moving the cutting head (22) along the Z axis (26) is provided, the cutting head (22) being arranged on the Z carriage (36).

12. Pipe processing machine (10, 50) according to one of the

preceding claims, characterized in that the cutting head (22) about the Y axis (24)

is arranged pivotably (B axis).

13. Pipe processing machine (10, 50) according to one of the preceding claims, characterized in that the axle support (20) has further interfaces for

Arrangement of additional functional components.

14. Pipe processing machine (10, 50) according to one of the

preceding claims, characterized in that a control cabinet is provided which is integrally formed with the machine bed (12).